package logic

import (
	"context"
	"product/model/mysql"
	"product/productrpc/internal/svc"
	"product/productrpc/productrpc"

	"github.com/zeromicro/go-zero/core/logx"
)

type ListLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

func NewListLogic(ctx context.Context, svcCtx *svc.ServiceContext) *ListLogic {
	return &ListLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

func (l *ListLogic) List(in *productrpc.ListRequest) (*productrpc.ListResponse, error) {
	// todo: add your logic here and delete this line
	page := in.Page
	if page <= 0 {
		page = 1
	}

	pageSize := in.Size
	switch {
	case pageSize > 100:
		pageSize = 100
	case pageSize <= 0:
		pageSize = 10
	}
	offset := (page - 1) * pageSize
	var pro []mysql.Product
	mysql.DB.Offset(int(offset)).Limit(int(pageSize)).Order("price desc").Find(&pro)

	var product []*productrpc.List
	for _, m := range pro {
		list := productrpc.List{
			Id:       int64(m.ID),
			Username: m.Username,
			Password: m.Password,
			Name:     m.Name,
			Price:    m.Price,
		}
		product = append(product, &list)
	}

	return &productrpc.ListResponse{List: product}, nil
}
